2MN/2N1
1-4-49
4202 BD steady-state error C
The BD signal is not detected.
Defective connec-
tor cable or poor
contact in the con-
nector.
Reinsert the connector. Also check for conti-
nuity within the connector cable. If none,
replace the cable.
Laser scanner unit and LSU relay PWB
(YC10)
LSU relay PWB (YC3) and engine PWB
(YC12)
Defective PD PWB
C.
Replace the laser scanner unit (see page 1-
5-17).
Defective engine
PWB.
Replace the engine PWB and check for cor-
rect operation (see page 1-5-49).
4203 BD steady-state error M
The BD signal is not detected.
Defective connec-
tor cable or poor
contact in the con-
nector.
Reinsert the connector. Also check for conti-
nuity within the connector cable. If none,
replace the cable.
Laser scanner unit and LSU relay PWB
(YC8)
LSU relay PWB (YC3) and engine PWB
(YC12)
Defective PD PWB
M.
Replace the laser scanner unit (see page 1-
5-17).
Defective engine
PWB.
Replace the engine PWB and check for cor-
rect operation (see page 1-5-49).
4204 BD steady-state error Y
The BD signal is not detected.
Defective connec-
tor cable or poor
contact in the con-
nector.
Reinsert the connector. Also check for conti-
nuity within the connector cable. If none,
replace the cable.
Laser scanner unit and LSU relay PWB
(YC12)
LSU relay PWB (YC3) and engine PWB
(YC12)
Defective PD PWB
Y.
Replace the laser scanner unit (see page 1-
5-17).
Defective engine
PWB.
Replace the engine PWB and check for cor-
rect operation (see page 1-5-49).
4300 Polygon motor phase error
ASIC won’t settle in comple-
tion of phase adjustment for 2
s after a BD signal is
detected.
Defective laser
scanner unit.
Replace the laser scanner unit (see page 1-
5-17).
Defective engine
PWB.
Replace the engine PWB and check for cor-
rect operation (see page 1-5-49).
Code Contents Causes
Check procedures/
corrective measures